package com.ruoyi.common.utils.file;

import java.awt.*;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import com.ruoyi.common.exception.CustomException;
import com.ruoyi.common.utils.ImageUtils;
import net.coobird.thumbnailator.Thumbnails;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.exception.file.FileNameLengthLimitExceededException;
import com.ruoyi.common.exception.file.FileSizeLimitExceededException;
import com.ruoyi.common.exception.file.InvalidExtensionException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.uuid.IdUtils;

/**
 * 文件上传工具类
 *
 * @author ruoyi
 */
public class FileUploadUtils
{
    /**
     * 默认大小 50M
     */
    public static final long DEFAULT_MAX_SIZE = 50 * 1024 * 1024;

    /**
     * 默认的文件名最大长度 100
     */
    public static final int DEFAULT_FILE_NAME_LENGTH = 100;

    /**
     * 默认上传的地址
     */
    private static String defaultBaseDir = RuoYiConfig.getProfile();

    public static void setDefaultBaseDir(String defaultBaseDir)
    {
        FileUploadUtils.defaultBaseDir = defaultBaseDir;
    }

    public static String getDefaultBaseDir()
    {
        return defaultBaseDir;
    }

    /**
     * 以默认配置进行文件上传
     *
     * @param file 上传的文件
     * @return 文件名称
     * @throws Exception
     */
    public static final String upload(MultipartFile file) throws IOException
    {
        try
        {
            return upload(getDefaultBaseDir(), file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        }
        catch (Exception e)
        {
            throw new IOException(e.getMessage(), e);
        }
    }

    /**
     * 根据文件路径上传
     *
     * @param baseDir 相对应用的基目录
     * @param file 上传的文件
     * @return 文件名称
     * @throws IOException
     */
    public static final String upload(String baseDir, MultipartFile file) throws IOException
    {
        try
        {
            return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        }
        catch (Exception e)
        {
            throw new IOException(e.getMessage(), e);
        }
    }

    /**
     * 文件上传
     *
     * @param baseDir 相对应用的基目录
     * @param file 上传的文件
     * @param allowedExtension 上传文件类型
     * @return 返回上传成功的文件名
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws FileNameLengthLimitExceededException 文件名太长
     * @throws IOException 比如读写文件出错时
     * @throws InvalidExtensionException 文件校验异常
     */
    public static final String upload(String baseDir, MultipartFile file,String[] allowedExtension)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException
    {
        int fileNamelength = file.getOriginalFilename().length();
        if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
        {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, allowedExtension);

        String fileName = extractFilename(file);

        File desc = getAbsoluteFile(baseDir, fileName);
        file.transferTo(desc);
        String pathFileName = getPathFileName(baseDir, fileName);
        return pathFileName;
    }

    public static final String uploadMeterImg(String baseDir, MultipartFile file, Map<String,String> printInfo, int index)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException
    {
        int fileNamelength = file.getOriginalFilename().length();
        if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
        {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }
        //String miid = printInfo.get("MIID"); //用户id
        String miname = printInfo.get("miname");//用户名称
        String oaname = printInfo.get("oaname");//表工名称
        String miseqno = printInfo.get("miseqno");//账卡号
        String ciid = printInfo.get("ciid");//用户号
        String workPosition = printInfo.get("workPosition");//抄表定位位置
        String time = DateUtils.getTime();//当前时间

        assertAllowed(file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        String fileName = extractFilenameMeter(file,ciid,oaname,index);//miid变更为CIID
        System.out.println("fileName" + fileName);//  \2021-11-29\陈扬\8122200153_20211129111518.jpg
        File desc = getAbsoluteFile(baseDir, fileName);
        System.out.println("getAbsoluteFile" + desc.getAbsolutePath());//  E:/凯纳科技/抄表APP/uploadPath0202\2021-11-29\陈扬\8122200153_20211129111518.jpg

        // 最终版本
        String source = desc.getAbsolutePath();  //源图片路径
        List<String> words = new ArrayList<>();
        //words.add("账卡号：" + miseqno);//23-12-28张辉说取消
        words.add("用户号：" + ciid);
        words.add("用户名：" + miname);
        words.add(oaname + "/摄 " + time);
        words.add("地点：" + workPosition);
        Color color = Color.red;
        Integer degree = null; //水印旋转角度-45，null表示不旋转
        File file1 = transferToFile(file);
        //加水印
        ImageUtils.markImageByMoreText(file1, source, null, "jpg", color, words, degree);
        file1.delete();
        String pathFileName = fileName.replace(File.separator, "\\");
        return pathFileName;


       // 临时版本
        /*File file1 = transferToFile(file);
        Thumbnails.of(file1)
                //.scale(0.3f)
                .outputQuality(0.1f)
                .size(600,600)
                .outputFormat("jpg").toFile(desc);
          //源图片路径
        List<String> words = new ArrayList<>();
        words.add("账卡号：" + miseqno + "  用户号：" + miid);
        words.add("用户名：" + miname);
        words.add(oaname + "/摄 " + time);
        Color color = Color.red;
        Integer degree = null; //水印旋转角度-45，null表示不旋转
        String source = desc.getAbsolutePath();
        File sourceFile = new File(source);
        ImageUtils.markImageByMoreText(sourceFile, source, null, "jpg", color, words, degree);
        //加水印
        String pathFileName = fileName.replace(File.separator, "\\");
        return pathFileName;*/


    }

    private static File transferToFile(MultipartFile multipartFile) {
//        选择用缓冲区来实现这个转换即使用java 创建的临时文件 使用 MultipartFile.transferto()方法 。
        File file = null;
        try {
            String originalFilename = multipartFile.getOriginalFilename();
            String[] filename = originalFilename.split("\\.");
            file=File.createTempFile(filename[0], filename[1]);
            multipartFile.transferTo(file);
//            file.deleteOnExit();

        } catch (IOException e) {
            System.out.println("transferToFile");
            e.printStackTrace();
        }
        return file;
    }




    /**
     * 编码文件名 //"\2021-08-14\牛夯\102431187_20210814142208.jpg"
     */
    public static final String  extractFilenameMeter(MultipartFile file,String ciid,String oaname,int index)
    {
        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        Date now = new Date();
        String format0 = DateFormatUtils.format(now, "yyyy");
        String format1 = DateFormatUtils.format(now, "MM-dd");
        String format2 = DateFormatUtils.format(now.getTime() + index * 1000, "yyyyMMddHHmmss");
        fileName = File.separator + format0 + File.separator + format1 + File.separator + oaname + File.separator + ciid + "_" + format2 + "." + extension;
        return fileName;
    }

    /**
     * 编码文件名 //"\2021-08-14\牛夯\102431187_20210814142208.jpg"
     */
    public static final String extractFilename(MultipartFile file)
    {
        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        fileName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
        return fileName;
    }

    private static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException
    {
        File desc = new File(uploadDir + File.separator + fileName);
        //File desc = new File( "H:/a.jpg");
        if (!desc.exists())
        {
            if (!desc.getParentFile().exists())
            {
                desc.getParentFile().mkdirs();
            }
        }
        return desc;
    }

    private static final String getPathFileName(String uploadDir, String fileName) throws IOException
    {
        int dirLastIndex = RuoYiConfig.getProfile().length() + 1;
        String currentDir = StringUtils.substring(uploadDir, dirLastIndex);
        String pathFileName = Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
        return pathFileName;
    }

    /**
     * 文件大小校验
     *
     * @param file 上传的文件
     * @return
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws InvalidExtensionException
     */
    public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, InvalidExtensionException
    {
        long size = file.getSize();
        if (DEFAULT_MAX_SIZE != -1 && size > DEFAULT_MAX_SIZE)
        {
            throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
        }

        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension))
        {
            if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
                        fileName);
            }
            else
            {
                throw new InvalidExtensionException(allowedExtension, extension, fileName);
            }
        }

    }

    /**
     * 判断MIME类型是否是允许的MIME类型
     *
     * @param extension
     * @param allowedExtension
     * @return
     */
    public static final boolean isAllowedExtension(String extension, String[] allowedExtension)
    {
        for (String str : allowedExtension)
        {
            if (str.equalsIgnoreCase(extension))
            {
                return true;
            }
        }
        return false;
    }

    /**
     * 获取文件名的后缀
     *
     * @param file 表单文件
     * @return 后缀名
     */
    public static final String getExtension(MultipartFile file)
    {
        String extension = FilenameUtils.getExtension(file.getOriginalFilename());
        if (StringUtils.isEmpty(extension))
        {
            extension = MimeTypeUtils.getExtension(file.getContentType());
        }
        return extension;
    }
}
